45432320 has 40 divisors (see below), whose sum is σ = 108937224. Its totient is φ = 18171904.

The previous prime is 45432281. The next prime is 45432323. The reversal of 45432320 is 2323454.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45432323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6314 + ... + 11433.

Almost surely, 2^45432320 is an apocalyptic number.

45432320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45432320 is an abundant number, since it is smaller than the sum of its proper divisors (63504904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45432320 is an equidigital number, since it uses as much as digits as its factorization.

45432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17770 (or 17754 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 45432320 is about 6740.3501392732. The cubic root of 45432320 is about 356.8247511100.

Adding to 45432320 its reverse (2323454), we get a palindrome (47755774).

The spelling of 45432320 in words is "forty-five million, four hundred thirty-two thousand, three hundred twenty".